Portable power charger with power input and power output connection interfaces

ABSTRACT

A portable charger is provided for charging electronic devices from a rechargeable internal battery. To accommodate multiple electronic devices, a portable charger unit is combined with multiple power output connection interfaces for connecting to more than one electronic device, as necessary, including connector cables attached to the charger housing or power connection ports. The charger also includes at least one power input connection interface for recharging the internal battery from an external power source, including an AC wall plug interface and a DC car charger interface, each connected to the charger housing and movable between a retracted, storage position and an extended use position. The power output connector cables can also be stored within storage cavities formed in the charger housing when not in use and extended therefrom for connection with electronic devices in need of recharging. The power connection ports can act as power inputs, power outputs, or both.

CROSS-REFERENCE TO RELATED APPLICATION

This continuation application claims the benefit of U.S. patentapplication Ser. No. 14/220,607 filed Mar. 20, 2014, and U.S.Provisional Application No. 61/865,891, filed Aug. 14, 2013, and U.S.Provisional Application No. 61/803,500, filed Mar. 20, 2013, which areincorporated herein by reference.

FIELD OF INVENTION

The present invention generally relates to power chargers for electronicdevices, and more particularly relates to a portable charger havingpower input connection interfaces storable within the charger housing,power output connection interfaces storable within the charger housing,a flashlight, a two-way charging interface capable of operating in apower input mode and a power output mode, and other features thatimprove upon the use and functionality of a portable power charger.

BACKGROUND OF THE INVENTION

Present day consumers typically own several electronic devicesspecifically designed for portability and on-the-go use, including, forexample, a mobile phone or smart phone, a portable music player like aniPod® or an MP3 player, a tablet, a portable gaming unit, a camera, andthe like. Each of these devices requires frequent recharging. Suchelectronic devices typically utilize a cable for connecting the deviceto a power source, such as a wall outlet, a car charger, an airplanecharger, or a computer. However, a separate cable is usually requiredfor each power source. Moreover, different electronic devices oftenutilize different connection ports and interfaces such that a singlecharging cable is not compatible with multiple devices. Accordingly, atech-savvy consumer, with several electronic devices, will usually havemultiple charging cables to keep track of. Even then, the consumer maybe without sufficient power to recharge a phone due to bad weather or apower outage, or may not always be in a place where a power source isreadily available, or even if so, may not have the appropriate cable oradapter available to use with a particular power source.

With traditional power sources, such as those noted above, it is oftendifficult to charge multiple devices at the same time, especially whereeach device requires a separate charging cable. For example, a carcharger port may only handle a single cable at a time. Adaptor devicesare available on the market for connecting multiple devices to a powersource at the same time—for example, a two-to-one or three-to-one carcharger splitter. However, such adapters are often only compatible withcertain interfaces. Moreover, such adapters are separate from portablepower sources and tend to be bulky.

Similarly, connection interface attachments are also available foradapting a charging cable for use with a variety of devices forrecharging from a power source, each requiring a different interfaceconnection. However, such attachments are usually separate small pieces,and therefore difficult to keep track of when not in use. Further, useof such attachments does not solve the problem presented by the need tocharge multiple devices at the same time, from the same power source, asoftentimes, only one attachment can be used with a charging cable at atime.

Portable power chargers exist that permit recharging of electronicdevices when a standard power source is not readily available. Forexample, portable power chargers are illustrated and described inco-pending U.S. application Ser. No. 13/571,992, filed Aug. 10, 2012,and Ser. No. 13/682,985, filed Nov. 21, 2012, which share commoninventors with the present application and which are incorporated hereinby reference. Some existing power charger devices usually cannot chargemultiple devices at the same time, either due to limited capacity orconnectivity options. Even if multiple devices may be attached to thepower charger at the same time, the charger may prioritize how thedevices are recharged—i.e., it will charge one device first and then thesecond, and so on. However, this approach takes a long time to rechargeall devices and risks not having sufficient charge remaining in thecharger for fully charging the second device.

Further, some portable charger devices will not permit recharging fromthe charger when the charger is itself being recharged or connected toan external power source. Such devices require the charger unit to bedisconnected from a power source before a charge will be passed on to adevice connected to the charger, or require the charger unit to be fullycharged first before any device connected to the charger unit can thenbe recharged.

Additionally, such portable charger devices typically require adedicated input port for recharging the internal battery and a separateoutput port dedicated for recharging electrical devices from theinternal battery. More particularly, such charging devices often requiremultiple output ports for recharging multiple electronic devices at thesame time. The addition of extra charging ports compromises the size anddesign of the charger unit, for example, a unit with a dedicated inputport and two or more output ports would need to be larger than a chargerunit with just a single port due to the need to properly arrange theelectronics for operation of the charger as desired.

In view of the foregoing, there is a need for a charger that can be usedto charge a variety of electronic devices, including but not limited tosmart phones, mobile phones, data tablets, music players, cameras,camcorders, gaming units, e-books, Bluetooth® headsets and earpieces,GPS devices, and the like, either individually or collectively invarious combinations. Additionally, there is a need for such a chargerthat is portable, has a compact size, and is easy to use in variousconditions and locations to charge one or more electronic devicessimultaneously, or recharge the internal battery of the charger unit forfuture on-the-go use, including but not limited to in a house or office,a car or an airplane. Still further, there is a need for a portablecharger having a port that can act both as an input port for rechargingan internal battery unit in the charger and as an output port forrecharging an electronic device connected to the charger. Still further,there is a need for a portable charger that can recharge the internalbattery from an external power source (either from an AC power source ora DC power source) at the same time as an electronic device connected tothe charger, even while both the external power source and theelectronic device are connected to the charger through the same port.Still further, there is a need for a portable charger unit in a compactsize that has increased functionality for a user requiring a portablesource of power. Accordingly, it is a general object of the presentinvention to provide a portable charger that improves upon conventionalpower chargers currently on the market and that overcomes the problemsand drawbacks associated with such prior art chargers.

SUMMARY OF THE INVENTION

In accordance with the present invention, a portable charger is providedfor charging one or more electronic devices. In general, a portablecharger kit may comprise a portable charger unit having an internalrechargeable battery unit for connecting to and recharging one or moreelectronic device, as necessary, at least one power input connectorinterface for recharging the internal battery unit from an externalpower source, at least one power output connector interface forconnecting the power charger with at least one electronic device.

Additionally, the portable charger may include one or more powerconnection ports that can act as power inputs, power outputs, or both,so as to be used for recharging the internal battery from an externalpower source connected to the charger via a connection port, or chargeelectronic devices connected to the charger via a connection port. Theportable charger may further be connected to an external power sourceand one or more electronic device at the same time, even using the samepower connection port, without affecting operation of the charger toreceive a charge from the external power source or supply a charge tothe electronic devices.

The portable power charger can be provided with multiple and variouspower input interfaces to connect with various power sources—both AC andDC sources—including U.S. and foreign wall sockets of varying designs, acar charger socket, an airline charger socket, and a USB interface.Preferably, the charger includes multiple power input connectors, eachcapable of attachment to a different power source, thereby eliminatingthe need for separate adapter pieces. Alternatively, the power chargercan utilize interchangeable power input connectors, such as withremovable, modular adapter pieces.

The portable power charge can also be provided with various power outputinterfaces to connect with electronic devices having varying connectioninterfaces, such as USB, micro-USB, mini-USB, Apple Lightning™, Apple30-pin, or the like. Preferably, the charger includes multiple outputconnectors, each capable of attachment to a different connectioninterface, thereby eliminating the need for separate adapter pieces.Alternatively, the power charger can utilize interchangeable poweroutput connectors, such as with the addition of removable, modularadapter pieces.

In preferred embodiments of the present invention, the power input andoutput connector interfaces included with the portable charger unit arestorable within the charger housing when not in use or when anotherpower interface is being used. For example, a standard AC plug interfacecan be pivotably attached to the charger housing. When the user needs toplug the charger into a standard U.S. wall socket for recharging theinternal battery of the charger, the plug can be pivoted out from itsstorage cavity so that the charger can be plugged in to the wall socket.Similarly, a DC power connector, such as a car charger interface, can bestorable within a cavity formed into the charger housing and movablefrom the charger housing to plug the charger into a car charging socket.Similarly, output connector interfaces, for example, USB, micro-USB,mini-USB, Apple Lightning™, Apple 30-pin, or the like, can be storablewithin the charger housing and pulled out of respective storage cavitiesfor use to charge electronic devices using the charger.

In another aspect of the present invention, a power indicator orinterface is provided on the charger housing to indicate the powercapacity level of the internal rechargeable battery unit. The powerinterface can comprise a light or series of lights, a digital readout,or other known forms of indicating power level of a battery. Additionalindicator means can be utilized in the present invention for variousfunctionalities, including but not limited to indicating that a chargeis being provided to an electronic device, either from a standard powersource or the internal battery unit of the portable battery charger, orindicating the power level in an electronic device attached to thecharger via the power output connector interface.

In another aspect of the present invention, the functionality of thepower charger can be improved by including a flashlight feature poweredfrom the internal battery unit.

These and other objects, features and advantages of the presentinvention will become apparent in light of the detailed description ofembodiments thereof, as illustrated in the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows a front perspective view of a portable battery charger inaccordance with a first embodiment of the present invention.

FIG. 2 shows a side planar view of the portable battery charger of FIG.1.

FIG. 3 shows another side view of the portable battery charger of FIG.1.

FIG. 4 shows a rear perspective view of the portable battery charger ofFIG. 1 with power output connector interfaces moved to extendedconditions for use.

FIG. 5 shows a side view of a car charger interface that may be providedon the portable battery charger of FIG. 1 in an extended position.

FIG. 6 shows a partial side view of a wall plug interface that may beprovided on the portable battery charger of FIG. 1, with the prongs ofthe wall plug interface moved between an extended position and aretracted position.

FIG. 7 shows a front perspective view of a portable power charger inaccordance with a second embodiment of the present invention.

FIG. 8 shows a rear perspective view of the portable power charger ofFIG. 7.

FIG. 9 shows a front perspective view of the portable power charger ofFIG. 7 with power output and input connection interfaces removed fromthe charger housing for use.

FIG. 10 shows a rear perspective view of the portable power charger ofFIG. 7 with a car charger interface extended from the charger housingfor use.

FIGS. 11a-11c illustrate a close-up perspective view of three poweroutput connection interfaces used with the portable power charger ofFIG. 7 and their respective storage cavities in the charger housing.

FIG. 12 shows a planar end view of the portable power charger of FIG. 7.

FIG. 13 shows an opposing planar end view of the portable power chargerof FIG. 7.

FIG. 14 shows a planar side view of the portable power charger of FIG.7.

FIG. 15 shows an opposing planar side view of the portable power chargerof FIG. 7.

FIG. 16 shows a front perspective view of a portable power charger inaccordance with a third embodiment of the present invention.

FIG. 17 shows a front perspective view of the portable power charger ofFIG. 16 with power output and input connection interfaces removed fromthe charger housing for use.

FIG. 18 shows a front perspective view of a portable power charger inaccordance with a fourth embodiment of the present invention.

FIG. 19 shows a rear perspective view of the portable power charger ofFIG. 18.

FIG. 20 shows a planar side view of the portable power charger of FIG.18.

FIG. 21 shows an opposing planar side view of the portable power chargerof FIG. 18.

FIG. 22 shows a partial perspective rear view of the portable powercharger of FIG. 18 with a power output connection interface extendedfrom the charger housing for use.

FIGS. 23a-23c illustrate steps for storing the power output connectioninterface of FIG. 22 in its storage cavity on the charger housing forthe portable power charger of FIG. 18.

FIG. 24 shows a perspective front view of the portable power charger ofFIG. 18 with a car charger interface extended from the charger housingfor use.

FIGS. 25a-25c illustrate steps for storing the car charger interface ofFIG. 24 in its storage cavity on the charger housing for the portablepower charger of FIG. 18.

FIG. 26 shows a front perspective view of a portable power charger inaccordance with a fifth embodiment of the present invention.

FIG. 27 shows an alternate front perspective view of the portable powercharger of FIG. 26 with a wall plug interface extended from the chargerhousing.

FIG. 28 shows a front perspective view of the portable power charger ofFIG. 26 with power output and input connection interfaces removed fromthe charger housing for use.

FIG. 29 shows a front right perspective view of a portable power chargerin accordance with a sixth embodiment of the present invention.

FIG. 30 shows a front left perspective view of the portable powercharger of FIG. 29.

FIG. 31 shows a front left perspective view of the portable powercharger of FIG. 29 with power output connection interfaces removed fromthe charger housing for use.

FIG. 32 shows a front right perspective view of the portable powercharger of FIG. 29 with a car charger interface extended from thecharger housing for use.

FIG. 33 shows a cross-sectional planar front view of the portable powercharger of FIG. 29.

DETAILED DESCRIPTION OF THE DRAWINGS

A portable charger in accordance with a first embodiment of the presentinvention is shown in FIGS. 1-4 and generally designated as referencenumeral 10. As illustrated, the charger 10 comprises a charger housing12 having at least one rechargeable internal battery (not shown) forrecharging one or more electronic devices via at least one powerconnection port or at least one power output connection interfaceprovided on the charger housing. The power connection port may also beused to supply power to the charger 10 for recharging the internalbattery unit. Additionally, or alternatively, the charger 10 further mayinclude at least one power input connection interface provided on thecharger housing 12 for supplying a charge to the internal battery whenthe charger is connected to an external power source via the power inputconnection interface. Still further, the charger 10 may include one ormore lights for use as a flashlight for projecting light from thecharger housing. The portable charger concepts described herein can alsobe used with one or more separate connector cables for connecting thecharger unit with an external power source for recharging the internalbattery unit and/or one or more electronic devices for recharging fromthe charger unit, as necessary.

The portable charger 10 in accordance with the present invention mayhave a variety of designs, including the embodiments discussed andillustrated herein, and may be provided with connector cables,connection ports, connection interfaces and adapters suitable forrecharging the internal battery of the charger unit and recharging thebatteries of various electronic devices connected thereto. For example,alternative designs for the portable charger unit are illustrated anddescribed in co-pending U.S. application Ser. No. 13/571,992, filed Aug.10, 2012; Ser. No. 13/682,985, filed Nov. 21, 2012, Ser. No. 13/800,825,filed Mar. 13, 2013, and Ser. No. 13/833,838, filed Mar. 15, 2013, whichshare common inventors with the present application and which areincorporated herein by reference. Such designs as shown in thoseapplications can be provided with the features described herein,including pre-attached power input connection interfaces, pre-attachedpower output connection interfaces, one-way or two-way power connectionports, and flashlight capabilities for increasing the functionality ofthe power charger.

In accordance with one aspect of the present invention, the portablecharger 10 preferably includes multiple power input connectioninterfaces provided with the charger housing 12 that can be used whenneeded, and which increase the versatility of the power charger 10 foruse with various power sources, including both AC and DC power sources,and further including but not limited to U.S. and foreign wall socketsof varying designs, a car charger socket, an airline charger socket, anda USB interface. As illustrated in FIG. 4, the portable battery charger10 comprises a charger housing 12 having power input interfaces in theform of an AC wall plug interface 16 and a DC car charger interface 16,both pivotally connected to the charger housing 12. As illustrated, boththe wall plug interface 14 and the car charger interface 16 are in theirrespective retracted positions, where they are stored within cavities 18and 20 formed in the charger housing 12. In operation, when a powerinput connection interface is needed to connect the charger 10 to anexternal power source—for example, to recharge the internal battery unitof the charger 10—it can be individually pivoted or removed out and awayfrom the charger housing 12 to an extended position for connection tothe power source. When a power input connection interface is not needed,it can be moved to its retracted position, as shown, preferablycontained within the general volume and footprint of the charger housing12, as shown in the figures and described in more detail below.

The power charger in accordance with the present invention can beconnected to an external power source to recharge the internal batteryunit, or provide a charging conduit between the power source and anelectronic device connected to the charger. In this regard, the chargeracts both as a portable power charger and as a power adapter forrecharging electronic devices.

The plug interface 14 and the car charger interface 16 are eachpreferably independently movable to a respective extended position wherethey can be connected to a respective power source as needed. As noted,when a power input interface is not needed, it can be moved to aretracted position and stored within a storage cavity formed within thecharger housing, such as wall plug cavity 18 and car charger cavity 20illustrated in FIG. 4. The cavities 18 and 20 preferably havingcomplementary shapes to the particular interfaces housed therein toefficiently store the interface without compromising the shape and sizeof the charger housing 12. Thus, when a power input connection interfaceis not in use, it can be kept in a retracted storage condition where itis preferably contained within the general volume and footprint of thecharger housing 12 without interfering with use of the power charger ordetracting from the size and appearance of the charger 10.

As shown in FIGS. 4-5, the car charger interface 16 is pivotallyconnected at a first end 17 to the charger housing 12. To extend the carcharger interface 16, the user can grasp the interface and pivot it outof its cavity 20 so that it generally extends out and away from thecharger housing 12, as generally shown in FIG. 5, in order to engage acar charger socket. Similarly, the wall plug interface 14 includesprongs 15, each of which are pivotally connected to the charger housing12. As illustrated, the prongs 15 are separably pivotable away from oneanother to store the wall plug interface 16 within the cavity 18 in aretracted position. FIG. 6 illustrates the pivoting movement of the wallplug interface 16 between the retracted, storage, position and theextended, use, position. Alternatively, the prongs 15 can becollectively pivoted to a retracted position whereby they remain in agenerally parallel relationship both in the retracted and extendedpositions of the interface 16.

Each of the power input connector interfaces is located on the chargerhousing 12 so as not to interfere with the other input interfaces orwith any of the power output connector interfaces or the powerconnection ports provided on the charger housing 12. Finger spaces 19and 22 may further be included for each cavity 18 and 20 to facilitategrasping of the interfaces to pivot them to a use condition.

As shown, in FIG. 4, the plug interface 14 and the car charger interface16 are moved to respective storage conditions where they are preferablystored within the general volume and footprint of the charger housing 12yet easily pivoted to a use condition when necessary. This condition ofthe charger 10 is generally used when a power input connection interfaceis not needed—i.e., the internal battery unit is charged and the charger10 is available for portable use as a power charger for other electronicdevices. It is advantageous for “on-the-go” use to have the power inputinterfaces contained within the general footprint of the charger housing12 so that they do not interfere with use, transportation or storage ofthe charger, or do not unnecessarily increase the size of the charger10, since a compact but powerful and versatile portable power bank isdesirable.

As noted, the charger 10 can include additional power input interfacesin addition or in lieu of the illustrated plug and car chargerinterfaces, including, but not limited to an airplane charge interface,foreign plug designs, a USB interface, both male and female, and thelike. In this regard, the present invention can use various combinationsof interfaces to improve the versatility of the charger for rechargingin a variety of locations and environments.

Still further, a power connection port can be provided to connect thepower charger 10 with an external power source via a connector cable orto a desired adapter for use with any complementary external powersource. For example, as shown in FIGS. 1 and 4, USB ports 22 may beprovided and the power charger 10 can be connected to an external powersource using a connector cable inserted into the USB port 22. The otherend of the cable can be connected, for example, with a computer, forcharging the power charger 10, or an interface adapter for use with,perhaps, a foreign wall socket design.

In accordance with another aspect of the present invention, the portablecharger 10 preferably includes multiple power output connectioninterfaces provided with the charger housing 12 that can be used whenneeded, and which increase the versatility of the power charger 10 foruse with various portable electronic devices. For example, the chargerhousing 12 can include connectors 24 attached to the charger housing 12and preferably stored within the housing 12 when not in use, as shown inFIGS. 1-3, but extendable from the housing 12 for connection withelectronic devices for recharging, as shown in FIG. 4, such as designsdescribed and illustrated in co-pending U.S. application Ser. No.13/571,992, filed Aug. 10, 2012, which shares common inventors with thepresent application and which is incorporated herein by reference.

In embodiments of the present invention, the power output connectorinterfaces can be connector cables 24 attached to the charger housing 12which may be stored within the charger housing 12 in a retracted,non-use, position, and pivoted or pulled away from their storagecavities 26 to an extended, or operation, position. The connector cables24 can be stiff, or more preferably, flexible and bendable to move to aposition where they can easily be attached to an electronic device forcharging from the portable charger 10. A first end 28 of each poweroutput connector interface 24 is attached to the charger housing 12 andoperatively connected to the internal battery of the charger 10. Asecond end 30 is extendable from the charger housing 12 for engagementwith an electronic device.

As illustrated in FIG. 4, the charger unit 10 in accordance with a firstembodiment comprises a charger housing 12 having three power outputconnector cables 24 attached to output ports (not shown) of the chargerunit 10 to connect respective electronic devices to the charger unit 10to be recharged from an internal rechargeable battery unit. As shown inFIG. 1, the charger unit further includes an on-off power button 32 onthe end that is operatively connected to the internal functionalcomponents and electrical circuitry for operating the charger unit 10.

Storage cavities 26 are formed into the charger housing 12 for receivingthe connector cables 24 when not in use. For example, cavities 26 a and26 b are formed on each side of the charger housing 12 for receiving arespective connector cable, as shown in FIGS. 2-4. As further shown inFIG. 4, a third storage cavity 26 c is formed on the back of the chargerhousing 12 for receiving its own connector cable 26. FIGS. 2-3 eachshown a connector cable 24 a and 24 b on each side of the chargerhousing 12 disposed within the general footprint and volume of thecharger housing in a non-use condition. FIG. 4 illustrates a thirdconnector cable 24 c disposed within the general footprint and volume ofthe charger housing 12 in a non-use condition. By comparison, FIG. 4further shows the two side connector cables 24 a and 24 b removed fromtheir storage cavities 26 a and 26 b to make the connection interfacesthereon exposed for connection to electronic devices.

Preferably, the connector cables 24 are permanently connected to thecharger housing 12 and their respective power outputs, althoughalternate embodiments may include connector cables that are removableand replaceable so as to permit different connection interfaces to beused with the charger unit 10.

Referring again to FIGS. 2-4, the connector cables 24 each includes ahead portion 34 at the distal end 28 having a connection interface 36.The head portion 34 is connected to the charger housing 12 by anintermediate cord portion 38. For example, one cable 24 a comprises amicro-USB connection interface 36 a, while another cable 24 b comprisesan Apple Lightning™ connection interface 36 b, and a third cable 24 ccomprises an Apple 30-pin connection interface 36 c. The cables 24 mayutilize any known interface without departing from the spirit andprinciples of the present invention. Additionally, as noted above, thecables 24 can be removable and replaceable so as to permit a user toeasily change the connection interface 36 for use with varyingelectronic devices. In this regard, the proximal ends 28 of theconnector cables 24 include an interface that complements a respectiveoutput port provided in the charger housing 12 for attaching theconnector cables 24 to the charger housing 12.

The connector cables 24 are preferably flexible so that they can be bentaway from the charger housing 12 to connect to an electronic deviceduring use of the charger unit 10. In the illustrated embodiment, eachof the storage cavities 26 includes a channel 40 to receive a cordportion 38 of the cables 24 within the footprint of the charger housing12. In alternate embodiments, a portion of the cord portion 38 can beretracted within the charger housing 12 through an opening and retractedusing a spring-biased mechanism as is generally known in the art. Inthis regard, a longer connector cable can be provided withoutcompromising the size of the charger housing 12 and permitting a compactcharger suitable for on-the-go usage.

The distal end 30 of each connector cable 24, having the connectioninterface 36, includes the head portion 34 at the end of the cordportion 38 that is received within a respective storage cavity 42 in thecharger housing 12. Preferably, the shape of the head 34 complements thestorage cavity 42 so that the connection interface 36 can be storedwithin the footprint and exterior volume of the charger housing 12 withno parts sticking out. Additionally, the head and cord portion 34 and 38of each cable 24 is preferably snap-fitted into a respective storagecavity 26 when stored so that the connector cables 24 do notaccidentally disengage or otherwise come loose from the storage cavities26.

Each of the power output connection interfaces is located on the chargerhousing 12 so as not to interfere with the other output interfaces orwith any of the power input connection interfaces or the powerconnection ports provided on the charger housing 12. Finger spaces mayfurther be included for each cavity to facilitate grasping of theinterfaces to pivot them to a use condition.

A power charger 10 in accordance with the present invention can also beconnected to one or more electronic devices for recharging from theinternal battery of the charger 10 or directly from an external powersource via the portable charger 10 without using the power outputconnection interfaces provided in the charger housing 12. In preferredembodiments, at least one electronic device can be connected to thecharger 10 via a power output connection port 22 provided on the chargerhousing 12, for example, using a connector cable inserted into theoutput port 22. As illustrated in FIG. 1, the charger housing 12includes two output ports 22 in the form of standard USB femaleconnection ports. A separate connector cable inserted into one of theseports 22 can further be combined with an adapter unit to interface withvarious charging interfaces used on electronic devices, including forexample a USB interface, a mini-USB interface, a micro-USB interface, anAC/DC interface, and the like. Such an output adapter unit can compriseinterchangeable parts, each adaptable to a different type of interface,or alternatively, the portable power charger can be adapted for use withan adapter comprising multiple different interfaces on the samepart—e.g., a squid connector with multiple connectors.

Though two USB ports are illustrated, the present invention can use moreor fewer ports without departing from the spirit and principles of thepresent invention. Additionally, though the USB ports 22 are preferablyintended as power output connection ports, the portable power charger 10can be provided with any combination of input and output ports asneeded, or further, utilize two-way charging interfaces to increase theversatility of the portable charger 10 such that a single port can beused to either recharge the internal battery of the charger 10, orcharge electronic devices connected to the charger 10 from the internalbattery via the port 22, or even charge such electronic devices whilerecharging the internal battery where the electronic devices and anexternal power source are connected to the charger 10 at the same timevia a single power connection port 22.

Accordingly, any of the power connection ports, such as USB connectionports 22 shown in FIG. 1, can be used to connect the power charger 10 toa desired adapter for use with any complementary external power source.Thus, where the charger 10 only includes a wall plug interface 14 and acar charger interface 16 for power input interfaces, as shown in otherfigures, for example, the USB port 22 can be used to connect to adifferent power source, such as a computer via a connector cable. Inthis regard, the USB connection port 22 can comprise a two-way charginginterface, such as described and illustrated in co-pending U.S.application Ser. No. 13/682,985, filed Nov. 21, 2012, which sharescommon inventors with the present application and which is incorporatedherein by reference. In this mode of operation, the charger 10 can besimultaneously connected to an external power source for recharging theinternal battery unit of the charger 10 and one or more electronicdevices being recharged either from the charger's internal battery ordirectly from the external power source.

Similarly, the power connection ports 22 can be used to connect to adesired adapter for use with any complementary electronic device. Thus,where the charger 10 only includes certain power output connectioninterfaces, a USB port 22 can be used to connect to an electronic devicerequiring a specific connection interface that is not included on any ofthe power output connection interfaces or which may be preoccupied byanother electronic device requiring a charge.

In preferred embodiments of the present invention, the rechargeablebattery unit is disposed within the charger housing 12. The rechargeablebattery unit is operatively connected with the power input connectorinterface(s) provided with the charger housing 12 for recharging thebattery when the charger 10 is connected to an external power source.The rechargeable battery is also operatively connected with the poweroutput connector interfaces for recharging electronic devices connectedto the power charger 10 from the rechargeable battery unit. In preferredembodiments, the battery unit comprises a rechargeable Lithium-Ionbattery. For example, one embodiment of the portable charger unitincludes three Lithium-Ion batteries, provided in series, to supply9,000 mAh. In an alternate embodiment, a single Lithium Polymer batterycan be provided to supply 10,000 mAh.

The power charger 10 also includes various electrical components (suchas integrated circuit chips and other circuitry) to provide computingoperations for the device. The integrated circuitry and other componentsmay comprise a power supply (e.g., the internal rechargeable battery), amicroprocessor and controller (e.g., a CPU), memory (e.g., ROM, RAM,flash), a circuit board, a hard drive, and/or various input/output (I/O)support circuitry. The electrical components may also include componentsfor sending and receiving data and media (e.g., antenna, receiver,transmitter, transceiver, etc.).

The power charger 10 also comprises a controller, including a processingunit, configured to execute instructions and to carry out operationsassociated with the power charger. For example, the processing unit cankeep track of the capacity level of the battery unit, store data orprovide a conduit means by which data can be exchanged betweenelectronic devices, such as between a smart phone and a computer. Theprocessing unit communicates with the battery unit to determine how muchcapacity is remaining in the battery. Upon determining the capacitylevel, the processing unit can communicate with a power indicator means44 to provide the user with information for how much capacity isremaining in the internal rechargeable battery unit and whether thecharger 10 needs to be connected to an external power source forrecharging.

The processing unit also includes a smart interface to determine thetotal current required for specific devices connected to the powercharger. In this regard, the processing unit operates in connection withinput/output (I/O) support circuitry to control interactions withdevices connected to the power charger. The I/O support circuitry may beintegrated with the processing unit or may be a separate component.Generally, the I/O support circuitry operates by exchanging power (andpossibly data) between the power charger and electronic devicesconnected thereto via the power output connector interface.

The processing unit further includes a storage unit that provides aplace to hold data or instructions for operation of the power chargerand rechargeable battery unit, or data exchanged between the powercharger, a computer, and electronic devices connected to the powercharger, or memory needed for further operations of the power charger.

The USB connection ports 22 of the power charger 10, described above forconnecting additional devices to the portable battery charger 10 forrecharging, can also be used for data exchange, without departing fromthe principles and spirit of the present invention.

Power chargers in accordance with the designs described and illustratedherein are readily portable as a result of the small size and increasedportability by storing power input connection interfaces and poweroutput connection interfaces within the footprint of the charger housing12 when not in use. Despite the small size of the power charger 10, thepower capacity is very high so that the battery unit can accommodatemultiple electronic devices at the same time, if necessary.

Referring again to FIG. 1, the charger unit 10 also includes aflashlight feature comprising a flashlight bulb or bulbs 46 at one endof the charger housing 12. Preferably, the flashlight comprises at leastone LED bulb 46 mounted within the charger housing 12 to project lightfrom the charger 10 for use as a flashlight. In the embodimentillustrated in FIG. 1, three LED bulbs 46 are provided, each operativelyconnected with the rechargeable battery unit of the charger 10.Referring to FIG. 4, a power control button 48 is provided to controloperation of the flashlight feature. The button 48 is also operativelyconnected to the internal battery unit so that when the button 48 ispressed to turn the flashlight “On,” the flashlight is powered by theinternal battery unit of the charger 10. Preferably, all three lightsoperate when the button 48 is pressed; however, in alternativeembodiments, the lights can turn on and off in various combinations toincrease or decrease the intensity of light from the charger 10. In suchembodiments, the button 48 can be used to control the intensity of thelight, perhaps by pressing the button 48 several times to cycle throughpredefined combinations of the three LED lights. Referring to FIG. 4,the flashlight power control interface can further include a powerindicator, such as an LED ring 50 provided around the power button, toconfirm that the flashlight portion is in use.

The portable power charger 10 also includes a power indicator means 44,shown in FIGS. 1 and 4, that will indicate not only that an electricalcurrent is being supplied to an electronic device connected to the poweroutput connector interface, but also the remaining capacity of theinternal rechargeable battery unit in the power charger 10. For example,in an embodiment of the present invention, the power indicator means 44comprises a series of lights, but can include more or fewer lightswithout departing from the principles and spirit of the presentinvention. When the battery is at full capacity, all the lights will belit up. As the battery power decreases, the lights will correspondinglydecrease by one as the power is used. If there is no capacity left inthe internal battery, none of the lights will be lit up or a lightcorresponding to an “empty” indication will be lit up. Alternatively,the power indicator means 44 can comprise a digital interface thatprovides a battery capacity level for the internal rechargeable batteryunit, or another known means of providing battery level information.

The processing unit of the power charger 10, which can keep track of thecapacity level of the internal rechargeable battery unit, store data orprovide a conduit means by which data can be exchanged betweenelectronic devices, such as between a smart phone and a computer,communicates with the battery unit to determine how much capacity isremaining in the battery. Upon determining the capacity level, theprocessing unit communicates with the power indicator means 44 toprovide the user with the appropriate signal and information for showinghow much capacity is remaining in the internal battery.

The processing unit may also include a smart interface to determine thetotal current required for the specific electronic devices connected tothe battery charger 10. Additionally, the battery charger 10 maycomprise an internal switch to draw power from the rechargeable batteryunit or essentially turn off the battery unit. For example, theprocessing unit can determine if the power charger is connected to anexternal power source. If so, when an electronic device is alsoconnected to the power charger 10, the processing unit can ensure thatthe electronic device is being charged directly from the external deviceinstead of drawing power from the rechargeable battery unit as it isbeing recharged itself. Further, the processing unit can determine whenthe power charger 10 is disconnected from an external power source, andif still connected to an electronic device, sufficiently switch theinternal circuitry of the battery charger 10 so that the electronicdevice continues to be recharged from the rechargeable battery unitwithout delay.

The processing unit also preferably includes a timer for automaticallyturning the battery charger 10 off if there is no device attached to thepower charger 10 for a predetermined period of time, or if any devicestill attached to the power charger 10 has reached maximum capacity. Inthis regard, the capacity of the internal rechargeable battery in thepower charger 10 can be preserved. Upon shut down of the power charger10, the power indicator means 44 will indicate that the power charger 10is being turned off—for example, the lights will provide a sequentialblinking signal.

Additional indicator means can be utilized in the present invention forvarious functionalities, including but not limited to indicating that acharge is being provided to an electronic device, either from a standardexternal power source or from the internal rechargeable battery unit ofthe portable power charger 10, or indicating the power level in anelectronic device attached to the power charger 10 via the power outputconnector interface.

Referring again to FIG. 1, the charger housing 12 is also provided witha power control interface 32 for turning the charger on and off. Asshown, the power control interface 32 comprises a manual on/off button.In alternate embodiments, the charger 10 can utilize an automatic poweron and power off protocol, such as described above and in co-pendingU.S. application Ser. No. 13/682,985, incorporated herein by reference.Still further, the charger 10 can be provided with such an automaticon/off protocol, yet still include a manual power button or switch(e.g., button 32) for additional control over use of the charger 10.

In accordance with the present invention, the charger housing 12 canhave a small size to increase the portability and versatility of thepower charger 10. When the power input connection interfaces and poweroutput connection interfaces are stored within their respectivecavities, they can be fully disposed within the general volume andfootprint of the charger housing 12, such as more clearly illustrated inFIG. 1, where none of the interfaces can be seen from the front viewwhen all are stored in their respective retracted positions. Moreover,each power input and output connection interface can be selectivelypivoted or extended out from the charger housing 12 for use withoutdisrupting or needing to move the other connection interfaces, such asjust needing the car charger interface or wall plug interface torecharge the internal battery, or one or more of the output connectioninterfaces to connect electronic devices to the charger 10, as partiallyillustrated in FIG. 4. The charger 10 permits multiple output connectioninterfaces to be used at the same time, and also permits electronicdevices to be connected to the charger 10 via power output connectioninterfaces even when the charger 10 is connected to an external powersource—for example, either using the wall plug interface 14, the carcharger interface 16, or a power connection port 22 with a separatecharging cable.

An alternate embodiment of a portable power charger in accordance withthe present invention is shown in FIGS. 7-15, and generally designatedas reference numeral 100. As illustrated, the charger 100 comprises acharger housing 112 having at least one rechargeable internal battery(not shown) for recharging one or more electronic devices via at leastone power connection port or at least one power output connectioninterface provided with the charger housing 112. Additionally, thecharger 100 includes at least one power input connection interfaceprovided with the charger housing 112 for supplying a charge to theinternal battery when the charger 100 is connected to an external powersource via the power input connection interface. At least one powerconnection port 122 may also be used to supply power to the charger 100for recharging the internal battery unit.

More preferably, the portable charger 100 preferably includes multiplepower input connection interfaces provided with the charger housing 112that can be used when needed, and which increase the versatility of thepower charger 100 for use with various power sources, including both ACand DC power sources, and further including but not limited to U.S. andforeign wall sockets of varying designs, a car charger socket, anairline charger socket, and a USB interface. As illustrated in FIG. 9,the portable battery charger 100 comprises a charger housing 112 havingpower input interfaces in the form of an AC wall plug interface 114pivotally connected to the charger housing 112 and a DC car chargerinterface 116 removable attached to the charger housing 112. Asillustrated in FIGS. 7-8, both the wall plug interface 114 and the carcharger interface 116 are in respective retracted positions, where theyare stored within cavities 118 and 120 formed in the charger housing112. In operation, when a power input connection interface is needed toconnect the charger 100 to an external power source—for example, torecharge the internal battery unit of the charger 100—it can beindividually pivoted or removed out and away from the charger housing112 to an extended position for connection to the power source. When apower input connection interface is not needed, it can be moved to itsretracted position and preferably contained within the general volumeand footprint of the charger housing 112, as shown in the figures anddescribed in more detail below.

The plug interface 114 and the car charger interface 116 are eachpreferably independently movable to a respective extended position wherethey can be connected to a respective power source as needed. When apower input interface is not needed, it can be moved to a retractedposition and stored within a storage cavity formed within the chargerhousing 112, such as wall plug cavity 118 and car charger cavity 120illustrated in FIGS. 14-15. The cavities 118 and 120 preferably havingcomplementary shapes to the particular interfaces housed therein toefficiently store the interface without compromising the shape, size andappearance of the charger housing 112. Thus, when a power inputconnection interface is not in use, it can be kept in a retractedstorage condition where it is preferably contained within the generalvolume and footprint of the charger housing 112.

As shown in FIGS. 9-10, the car charger interface 116 is attached at afirst end to the charger housing 112 using a cable 127, preferably aflexible cable that permits extension of the car charger interface 116away from the charger housing 112. As illustrated in FIG. 10, the carcharger interface cable 127 comprises a coiled design that can be storedwithin the charger housing 112 when the interface is in its retracted,storage, non-use position. The other end of the charging cable 127 isconnected to the car charger interface 116. To extend the car chargerinterface 116, the user can grasp the interface and pull it out of itscavity 120, as generally shown in FIGS. 9-10, so that it generallyextends out and away from the charger housing 112 in order to engage acar charger socket. As shown in FIG. 15, a fingernail slot 121 may beprovided around the interface 116, when stored, to facilitatedisengagement of the interface 116 and cable 127 from the chargerhousing 112.

In accordance with preferred embodiments of the present invention, thecharging cable 127 is stored within the general volume and footprint ofthe charger housing 112 when not needed. In the embodiment illustratedin FIGS. 7-15, the charging cable 127 has two parts—a straight part 129that extends along the side of the charger housing 112 for storage, anda coiled part 131 that may be stored within the charger housing 112. Insuch a design, a cap 133 is provided intermediate to the straight part129 and the coiled part 131, essentially delineating the transitionbetween the two parts, but more importantly covering the storage cavityof the coiled portion 131 and holding the coiled part 131 within thecharger housing 112 when the car charger interface 116 is stored awaywithin the charger housing 112. When the interface 116 is removed fromthe housing 112 and extended away therefrom, the straight part 129extends out from the cap 133. If additional length and/or flexibility isrequired for use of the car charger interface 116, the cap 133 can beremoved from the charger housing 112 so that the coiled portion 131 canbe pulled from its storage cavity and extended away from the chargerhousing 112. As shown, the cap 133 stays attached to the charging cable127. When the cable 127 is returned to its storage condition, the cap133 preferably snap fits back onto the charger housing 112.

In an alternate embodiment, illustrated in FIGS. 16-17, the chargingcable 127′ attached to the car charger interface 116 extends along theouter side edge and end edge of the charger housing 112. A cable lock135 is provided to keep the cable 127′ taut to the housing 112 whenstored. More particularly, a slack portion of the charging cable 127′ isprovided proximate the corner of the charger housing 112 to ensure thatthe car charger interface 116 and the charging cable 127′ can besecurely snap fitted into the appropriate storage cavity 126 when not inuse. When the car charger interface 116 is needed, the interface 116 isremoved from its storage cavity 142 along with as much of the chargingcable 127′ as is needed. In some embodiments, additional length of cablecan be stored within the charger housing 112, preferably is aspring-biased fashion so that the cable 127′ can be returned within thehousing 112 when no longer needed.

As further illustrated, the car charger interface 116 may also include aconnection port—such as a USB female connection port 123—which may beused when the car charger connection interface 116 is in either itsextended condition or its retracted condition. More particularly, theconnection port 123 provided on the car charger interface 116 may beused as a power output, power input, or both.

Similarly, a wall plug interface 114 is pivotally connected to thecharger housing 112, and movable between use and non-use conditions. Inparticular, the wall plug interface 114 includes prongs 115, which arepivotally connected to the charger housing 112. As illustrated, theprongs 115 can be collectively pivoted to a retracted position wherebythey remain in a generally parallel relationship both in the retractedand extended positions of the interface 114. FIGS. 7 and 9 illustratethe pivoting movement of the wall plug interface 114 between theretracted, storage, position (also shown in FIG. 14) and the extended,use, position (also shown in FIGS. 12-13).

As illustrated in FIG. 9, the charger unit 100 comprises a chargerhousing 112 having three power output connector cables 124 attached tooutput ports of the charger unit 100 to connect respective electronicdevices to the charger unit 100 to be recharged from an internalrechargeable battery unit. As shown in FIG. 12, the charger unit 100further includes an on-off power button 132 on the end that isoperatively connected to the internal functional components andelectrical circuitry for operating the charger unit 100.

Storage cavities 126 are formed into the charger housing for receivingthe connector cables 124 when not in use. In a preferred embodiment, thestorage cavities 126 can be essentially combined so that multipleconnection interfaces 136 attached at the ends of respective cables 124are stored in generally the same portion of the charger housing 112.Each interface 136 may still be independently removed from the housing112 without inhibiting use or storage of the other interfaces. FIGS.11a-11c shows a close-up of a combined storage cavity 142 for multiplepower output connection interfaces 136. As illustrated in FIG. 11a ,three output interfaces 136 are in retracted, storage positions. In FIG.11b , one of the output interfaces has been removed, presumably for useto charge an electronic device requiring a particular connectioninterface (e.g., an Apple 30-pin interface). As illustrated, the othertwo interfaces remain in respective storage positions. In FIG. 11c , allthree output interfaces 136 have been removed from their respectivestorage cavities 142, presumably to charge multiple electronicdevices—each requiring a different connection interface—from the powercharger 100. When no longer needed, each connection interface 136 can besnap fitted back into its respective storage cavity 142.

As further illustrated in FIGS. 11a-11c , each head portion 134 for eachpower output connection cable 124 can be provided with friction grips135 to facilitate removal of the head portion 134 from the chargerhousing 112 for use. Additionally, the storage cavities 126 are designedto complement the shape of the head portion 134 and connectioninterfaces 136 so as to ensure snug fit, facilitate snap fitting theinterfaces 136 into storage pace to prevent unintentional or accidentalremoval, and to efficiently use space within the footprint of thecharger housing 112 to create a compact and easily portable design forthe power charger 100 with maximized functionality. As shown, thestorage cavities 142 provide specific nooks for snuggly receiving thespecific interface portion 136 as well as the head portion 134.Preferably, the connector cables 124 are permanently connected to thecharger housing 112 and their respective power outputs, althoughalternate embodiments may include connector cables that are removableand replaceable so as to permit different connection interfaces to beused with the charger unit 100.

The connector cables 124 are preferably flexible so that they can bebent away from the charger housing 112 to connect to an electronicdevice during use of the charger unit. In the illustrated embodiment,each of the storage cavities 126 includes a channel 140 to receive acord portion 138 of the cables 124 within the footprint of the chargerhousing 112. In alternate embodiments, a portion of the cord portion 138can be retracted within the charger housing 112 through an opening. Inthis regard, a longer connector cable can be provided withoutcompromising the size of the charger housing 112 and permitting acompact charger suitable for on-the-go usage.

Referring again to FIG. 9, each connector cable 124 includes a distalend 130 having a unique connection interface 136 fitted within thestorage cavity 126. For example, one cable 124 a comprises a micro-USBconnection interface 136 a, while another cable 124 b comprises an AppleLightning™ connection interface 136 b, and a third cable 124 c comprisesan Apple 30-pin connection interface 136 c. The cables 124 may utilizeany known interface without departing from the spirit and principles ofthe present invention.

Referring to FIG. 14, two charging cables 124 run parallel down the sideof the charger housing 112, while one charging cable 124 runs along theend of the housing 112. The proximal end 128 of each cable 124 isattached to the charger housing 112 and, in use, the cables 124 pivotout and away from the proximal ends 128, as shown in FIG. 9.

A power charger in accordance with the present invention can also beconnected to one or more electronic devices for recharging from theinternal battery of the charger 100 or directly from an external powersource via the portable charger 100 without using the power outputconnection interfaces provided in the charger housing 112. In preferredembodiments, at least one electronic device can be connected to thecharger 100 via a power output connection port 122 provided on thecharger housing 112, for example, using a connector cable inserted intothe output port 122. As illustrated in FIGS. 8 and 13, the chargerhousing 112 includes two output ports 122 in the form of standard USBfemale connection ports. A connector cable inserted into one of theseports 122 can further be combined with an adapter unit to interface withvarious charging interfaces used on electronic devices, including forexample a USB interface, a mini-USB interface, a micro-USB interface, anAC/DC interface, and the like. Such an output adapter unit can compriseinterchangeable parts, each adaptable to a different type of interface,or alternatively, the portable power charger 100 can be adapted for usewith an adapter comprising multiple different interfaces on the samepart—e.g., a squid connector with multiple connectors.

Though two USB ports 122 are illustrated on the end of the chargerhousing 112, the present invention can use more or fewer ports withoutdeparting from the spirit and principles of the present invention. Forexample, the connection port provided on the car charger interface 116(shown in FIG. 15) may also be used as a connection output, input, orboth. Additionally, though the USB ports 122 are preferably intended aspower output connection ports, the portable power charger 100 can beprovided with any combination of input and output ports as needed, orfurther, utilize two-way charging interfaces to increase the versatilityof the portable charger 100 such that a single port can be used toeither recharge the internal battery of the charger, or chargeelectronic devices connected to the charger 100 from the internalbattery via the port, or even charge such electronic devices whilerecharging the internal battery where the electronic devices and anexternal power source are connected to the charger at the same time viaa single power connection port 122.

Referring to FIG. 12, the portable power charger 100 also includes apower indicator means 144 that will indicate not only that an electricalcurrent is being supplied to an electronic device connected to the poweroutput connector interface, but also the remaining capacity of theinternal rechargeable battery unit in the power charger 100. Forexample, in an embodiment of the present invention, the power indicatormeans 144 comprises a series of lights, but can include more or fewerlights without departing from the principles and spirit of the presentinvention. When the battery is at full capacity or near full capacity, a“full” light—designated by an “F”—will be lit up. As the battery powerdecreases, the lights will correspondingly adjust as the power is used.For example, when the battery is approximately half-charger, then anassociated “½” light will be lit up. If there is no capacity left in theinternal battery, a light corresponding to an “empty”indication—designated by an “E”—will be lit up.

An alternate embodiment of a portable power charger in accordance withthe present invention is shown in FIGS. 18-25, and generally designatedas reference numeral 200. Referring to FIG. 18, a power charger 200comprises a charger housing 212 having two connection ports 222 providedthereon and a power control interface 232 for controlling operation ofthe charger 200. Referring to FIG. 19, the charger 200 also comprisesthree power output connection interfaces 236 attached to the chargerhousing 212 by respective flat attachment ribbons 238 wrapped around thecharger housing 212. The heads 234 of each output connection cable 224is stored within a respective storage cavity 242 when not in use. Asillustrated, the output connection cables 224 are parallelly arrangedaround the charger housing 212 when not in use. Each output connectioninterface 236 can be individually removed from its storage cavity 242and flexed away from the housing 212 for use to connect to an electronicdevice in need of recharging.

Referring to FIGS. 18-21, the charger 200 is illustrated with all of theinterfaces stored within the housing 212. For comparison, FIG. 22 showsthe charger 200 with one of the output connection interfaces 236 removedand extended away from the charger housing 212 for use. Each outputconnection interface 224 comprises a connector head 234 attached to thedistal end 230 of the attachment ribbon 236. FIGS. 23a-23c illustratehow the connector head 234 can be moved into and secured within astorage cavity 242. For example, FIG. 23a shows movement of theconnector head 234 into the cavity 242 from a use condition. FIG. 23bshows sliding movement of the connector head 234 further into the cavity242 to protect the interface 236 during non-use conditions. Preferably,the connector head 234 is snap fitted into the cavity 242—which asshown, has complementary shape to the connector head 234 and interface236—where is can be securely stored until needed, as shown in FIG. 23c .Preferably, the size of the cavity 242 is slightly larger than the sizeof the connector head 234 with interface 236 to facilitate movement ofthe interface 236 into and out of the cavity 242. When the connectorhead 234 is snapped into its storage position (as shown in FIG. 23c ),the attachment ribbon 238 will cover the extra space of the cavity 242,as partially shown in FIG. 22, to prevent contamination or accidentalsnagging of the ribbons.

Referring to FIGS. 19 and 24, the charger 200 also includes power inputconnection interfaces in the form of a DC car charger interface 216 thatis likewise connected to the charger housing 212 using a flat attachmentribbon 238 that runs parallel to the ribbons of the power inputconnection interfaces described above. The car charger interface 216 issimilarly stored within a storage cavity formed in the charger housing112 when not in use. When needed for connecting the charger 200 to a carcharger socket to recharge the internal battery of the charger 200, thecar charger interface 216 can be removed from its storage cavity 220 andextended away from the charger 200 for use, as shown in FIG. 24. Theribbon 238 can be flexible to facilitate use of the car chargerinterface 116, but also sufficiently rigid to easily return theinterface 236 back to its cavity 242 when it is no longer needed andkeep it tight to the charger housing 112 in line with the otherattachment ribbons when not in use. As shown in FIGS. 25a-25c , the carcharger interface 216 is provided with spring-loaded pawls to help keepthe interface secured within its storage cavity 220 when not needed.

Referring to FIG. 20, the charger 200 also includes another power inputconnection interface in the form of an AC wall plug 214 that ispivotally connected to the charger housing 212. The plug 214 can bepivoted out and away from the charger housing 212, as shown in FIG. 22,for use—i.e., to connect the charger 200 with a wall socket to rechargethe internal battery unit of the charger 200. When the plug 214 is notneeded, it can be pivoted back into its storage cavity 218 andpreferably contained within the footprint of the charger housing 212when so stored, as shown in FIG. 20.

The charger 200 permits multiple power output connection interfaces tobe used at the same time, and also permits electronic devices to beconnected to the charger via power output connection interfaces evenwhile the charger 200 is connected to an external power source—forexample, either using the wall plug interface 214 or the car chargerinterface 216.

Still another embodiment of a portable power charger in accordance withthe present invention is illustrated in FIGS. 26-28 and generallydesignated as reference numeral 300. As shown, the charger 300 includesa charger housing 312 with a generally rectangular tubular shape. Noconnection interfaces—either input or output—are exposed. Two powerconnection ports 322 are provided on the end face of the housing 312 anda power control interface 332 is provided on a side face alongside powerindicator means 344. A power input connection interface in the form ofan AC wall plug 314 is contained within the charger housing 312 and canbe extended from the housing 312 for use and retracted within thehousing 312 for storage—for example, using a slide switch 352 providedon an opposing end face of the charger housing 312. The slide switch 352and the plug interface 314 in its extended condition are more clearlyillustrated in FIG. 27.

Referring back to FIG. 26, the charger housing 312 has a channel 354running along the length of the housing 312. This channel 354 is used tostore charging cables for power input and output connection interfacesstored within the charger housing 312, as described in more detailbelow. Notably, the charge housing 312 includes a cap 356 that isremovable from a main body portion 358 of the charger 300. When removed,a power input connection interface in the form of a DC car chargerinterface 316 is exposed on the backside of the cap 356, as shown inFIG. 28. Removal of the cap 356 also exposes power output connectioncables 324—for example, a first connector head 334 a having an Apple30-pin interface 336 attached to the distal end of a first charging cordportion 338 a and a second connector head 334 b having both a micro-USBinterface 336 b and an Apple Lightning™ interface 336 c attached to thedistal end of a second charging cord portion 338 b. The cap 356 as wellas the power output connection cables 324 a and 324 b are connected tothe main body 358 of the charger 300 by the cord portions 338—theproximal ends 328 of each cable 324 is connected to the charger housing312; the distal ends 330 of each cable 324 is connected to a respectiveinterface or connector head 334.

As shown in FIG. 28, the main body 358 of the charger housing 312includes storage cavities 342 for each of the head portions 334 andinterfaces 336. For example, the car charger interface 316 includes agenerally cylindrical portion extending from the backside of the cap356. This portion engages a car charger socket in accordance with knowoperation of car chargers. In any event, when the car charger interface316 of the charger 300 is not needed, it can be received within acomplementary shaped cylindrical opening 320 formed in the main body 358of the charger housing 312, as illustrated in FIG. 28. Similar cavities342 are provided for each of the power output connection interfaces. Theconnector heads 334 for each interface can be stored within a respectivecavity 342 when not in use. As noted, the charging cables 324 are runwithin the channel 354 formed in the charger housing 312 for storage andare kept hidden when not in use. As a result, the charger 300 canmaintain a smooth, small and tight shape and form.

In use of a particular power output connection interface, the cap 356can be removed to expose the interface 336, which can then be removedfrom its storage cavity 342 and extended away from the charger housing312. When the interface 336 is connected to an electronic device forrecharging, the charging cable 324 extends out of the channel 354. Atthis time, the cap 356 can be placed back on the main body 358, ifdesired. Additionally, the charger 300 permits multiple power outputconnection interfaces to be used at the same time, and also permitselectronic devices to be connected to the charger 300 via power outputconnection interfaces even while the charger 300 is connected to anexternal power source—for example, either using the wall plug interface314 or the car charger interface 316.

Another embodiment of the portable power charger in accordance with thepresent invention is illustrated in FIGS. 29-33 and generally designatedas reference numeral 400. As shown, the power charger 400 comprisespower connection ports 422, a power control interface 432, a powerindicator means 444, power input connection interfaces, and power outputconnection interfaces, similar to other embodiments shown and describedherein. Indeed, the charger 400 illustrated in FIG. 29 is similar inmany regards to the design illustrated in FIGS. 7-15, and moreparticularly includes three power output connection cables 424 storablewithin respective retracted positions within storage cavities 426 formedinto the charger housing 412. An AC wall plug interface 414 and a DC carcharger interface 416 are also provided. As shown in FIGS. 29 and 32,the car charger interface 416 is stored within a cylindrically shapedstorage cavity 420, into which the interface 416 is inserted lengthwise.A cross-sectional view of the charger 400, as illustrated in FIG. 33,illustrates the relational positioning of the input and outputconnection interfaces, as well as the internal battery unit (in the formof three batteries in series) and a motherboard containing thecontroller and processing unit of the charger 400.

The foregoing description of embodiments of the present invention hasbeen presented for the purpose of illustration and description. It isnot intended to be exhaustive or to limit the invention to the formdisclosed. Obvious modifications and variations are possible in light ofthe above disclosure. The embodiments described were chosen to bestillustrate the principles of the invention and practical applicationsthereof to enable one of ordinary skill in the art to utilize theinvention in various embodiments and with various modifications assuited to the particular use contemplated.

What is claimed is:
 1. A portable charger unit for recharging at leastone electronic device having a rechargeable internal battery, saidportable charger unit comprising: a charger housing internally storing arechargeable battery; a wall plug input connection interface connectedto the charger housing for movement between an extended position wheresaid wall plug input connection interface extends away from the chargerhousing for use and a retracted position for storage of said wall pluginput connection interface within the charger housing, said wall pluginput connection interface being operatively connected to the internalbattery for providing an electrical charge from an external wall socketpower source to the charger unit when said wall plug input connectioninterface is operatively engaged with said power source and forrecharging the internal battery when the charger unit is connected tosaid power source in said manner; a car charger input connectioninterface connected to the charger housing for movement between anextended position where said car charger input connection interfaceextends away from the charger housing for use and a retracted positionfor storage within the charger housing, said car charger inputconnection interface being operatively connected to the internal batteryfor providing an electrical charge from an external car charger socketto the charger unit when said car charger input connection interface isoperatively engaged with said external car charger socket and forrecharging the internal battery when the charger unit is connected tosaid car charger socket in said manner, wherein both the wall pluginterface and the car charger interface are pivotable to respectiveretracted positions and disposed within the general footprint of thecharger housing when in said retracted positions, and a plurality ofpower connection output connector cables operatively connected to theinternal battery for providing an electrical charge from the internalbattery to respective electronic devices when said devices are connectedto the charger unit via the power connection output connector cables,each connector cable comprising: a proximal end attached to the chargerhousing, a distal end having an output connection interface adapted forengagement with an electronic device; and an intermediate portionextending between said proximal and distal ends of said connector cable,wherein at least the output connection interface of each of saidplurality of power connection output connector cables is storable withina storage cavity formed in the charger housing so that said outputconnection interfaces are contained within the general footprint of thecharger housing when not in use and are removable from said cavities toan extended position for use to connect with an electronic device. 2.The portable charger unit according to claim 1, wherein the car chargerinterface comprises: a proximal end attached to the charger housing; adistal end having a head portion including the interface adaptable forengagement with the car charger socket; and an intermediate cord portionextending between said proximal and distal ends, wherein the chargerhousing includes a cavity for storage of the head portion when the carcharger interface is in its retracted position.
 3. The portable chargerunit according to claim 1, wherein the output connection interfaces ofat least two of the power connection output connector cables are storedwithin a common cavity formed within the charger housing and aredisposed in respective storage positions within said cavity withoutinterfering with movement of the other output connection interface fromthe cavity to its extended position for use.
 4. The portable chargerunit according to claim 1, wherein the plurality of power connectionoutput connector cables comprising a first connector cable attached to afirst side of the charger housing and storable within a first cavitydisposed within said first side, and a second connector cable attachedto a second side of the charger housing opposite from the first side andstorable within a second cavity disposed within said second side.
 5. Theportable charger unit according to claim 4, further comprising a thirdconnector cable attached to a rear face of the charger housing andstorable within a third cavity disposed within said rear face.
 6. Theportable charger unit according to claim 1 further comprising at leastone power connection output port operatively connected to the internalbattery.
 7. A portable charger unit for recharging at least oneelectronic device having a rechargeable internal battery, said portablecharger unit comprising: a charger housing internally storing arechargeable battery; a wall plug interface configured for engagementwith a wall socket and being operatively connected to the internalbattery for providing an electrical charge from said wall socket to thecharger unit when said wall plug interface is operatively engaged withsaid wall socket and for recharging the internal battery when thecharger unit is connected to said wall socket in said manner, said wallplug interface being pivotably connected to the charger housing formovement between an extended position where said wall plug interfaceprojects outwardly away from the charger housing for use and a retractedposition for storage of said wall plug interface within the chargerhousing; a car charger interface configured for engagement with a carcharger socket and being operatively connected to the internal batteryfor providing an electrical charge from said car charger socket to thecharger unit when said car charger interface is operatively engaged withsaid car charger socket and for recharging the internal battery when thecharger unit is connected to said car charger socket in said manner,said car charger interface being removably connected to the chargerhousing for movement between an extended position where said car chargerinterface extends away from the charger housing for use and a retractedposition for storage of said car charger interface within the chargerhousing; and a plurality of power connection output connector cablesoperatively connected to the internal battery for providing anelectrical charge from the internal battery to respective electronicdevices when said devices are connected to the charger unit via thepower connection output connector cables, wherein the wall pluginterface and the car charger interface, in their respective retractedpositions, are each disposed within a storage cavity formed in thecharger housing so that said interfaces are each contained within thegeneral footprint of the charger housing when not in use, and the carcharger interface is connected to the charger housing by a cableconnected between the car charger interface and the charger housingpermitting movement of the car charger interface between its retractedposition where it is stored within a storage cavity in the chargerhousing and its extended position where it extends away from the chargerhousing for engagement with a car charger socket while remainingconnected to the charger unit via said cable.
 8. The portable chargerunit according to claim 7, wherein each connector cable comprises: aproximal end attached to the charger housing, a distal end having anoutput connection interface adapted for engagement with an electronicdevice; and an intermediate portion extending between said proximal anddistal ends of said connector cable.
 9. The portable charger unitaccording to claim 8, wherein at least the output connection interfaceof each of said plurality of connector cables is storable within astorage cavity formed in the charger housing so that said outputconnection interfaces are contained within the general footprint of thecharger housing when not in use.
 10. The portable charger unit accordingto claim 9, wherein at least two of the output connection interfaces arestored within a common cavity formed within the charger housing and aredisposed in respective storage positions within said cavity withoutinterfering with movement of the other output connection interface fromthe cavity to an extended position for use.
 11. The portable chargerunit according to claim 7, wherein the plurality of power connectionoutput connector cables comprising a first connector cable attached to afirst side of the charger housing and storable within a first cavitydisposed within said first side, and a second connector cable attachedto a second side of the charger housing opposite from the first side andstorable within a second cavity disposed within said second side. 12.The portable charger unit according to claim 11, further comprising athird connector cable attached to a rear face of the charger housing andstorable within a third cavity disposed within said rear face.
 13. Theportable charger unit according to claim 7, further comprising at leastone power connection output port operatively connected to the internalbattery.
 14. A portable charger unit for recharging at least oneelectronic device having a rechargeable internal battery, said portablecharger unit comprising: a charger housing internally storing arechargeable battery; a wall plug interface connected to the chargerhousing for movement between an extended position where said wall pluginterface extends away from the charger housing for use and a retractedposition for storage of said wall plug interface within the chargerhousing, said wall plug interface being operatively connected to theinternal battery for providing an electrical charge from an externalwall socket power source to the charger unit when said wall pluginterface is operatively engaged with said power source and forrecharging the internal battery when the charger unit is connected tosaid power source in said manner; a car charger input connectioninterface connected to the charger housing for movement between anextended position where said car charger input connection interfaceextends away from the charger housing for use and a retracted positionfor storage within the charger housing, said car charger inputconnection interface being operatively connected to the internal batteryfor providing an electrical charge from an external car charger socketto the charger unit when said car charger input connection interface isoperatively engaged with said external car charger socket and forrecharging the internal battery when the charger unit is connected tosaid car charger socket in said manner, wherein both the wall pluginterface and the car charger interface are pivotable to respectiveretracted positions and disposed within the general footprint of thecharger housing when in said retracted positions, at least one powerconnection port operatively connected to the internal battery; and aplurality of power output connector cables operatively connected to theinternal battery for providing an electrical charge from the internalbattery to respective electronic devices when said devices are connectedto the charger unit via the power output connector cables, wherein eachconnector cable comprises: a proximal end attached to the chargerhousing, a distal end having an output connection interface adapted forengagement with an electronic device; and an intermediate portionextending between said proximal and distal ends of said connector cable,wherein at least the output connection interface of each of saidplurality of connector cables is storable within a storage cavity formedin the charger housing so that said output connection interfaces arecontained within the general footprint of the charger housing when notin use.
 15. The portable charger unit according to claim 14, wherein thecar charger interface, in its retracted position, is disposed within acavity formed in the charger housing so that said car charger interfaceis contained within the general footprint of the charger housing whennot in use.
 16. The portable charger unit according to claim 14, whereinthe car charger interface comprises: a proximal end attached to thecharger housing; a distal end having a head portion including theinterface adaptable for engagement with the car charger socket; and anintermediate cord portion extending between said proximal and distalends, wherein the charger housing includes a cavity for storage of thehead portion when the car charger interface is in its retractedposition.
 17. The portable charger unit according to claim 14, whereinthe output connection interfaces of at least two of the power connectionoutput connector cables are stored within a common cavity formed withinthe charger housing and are disposed in respective storage positionswithin said cavity without interfering with movement of the other outputconnection interface from the cavity to its extended position for use.18. The portable charger unit according to claim 14, wherein theplurality of power connection output connector cables comprising a firstconnector cable attached to a first side of the charger housing andstorable within a first cavity disposed within said first side, and asecond connector cable attached to a second side of the charger housingopposite from the first side and storable within a second cavitydisposed within said second side.
 19. The portable charger unitaccording to claim 18, further comprising a third connector cableattached to a rear face of the charger housing and storable within athird cavity disposed within said rear face.
 20. A portable charger unitfor recharging at least one electronic device having a rechargeableinternal battery, said portable charger unit comprising: a chargerhousing internally storing a rechargeable battery; at least one powerinput connection interface connected to the charger housing for movementbetween an extended position where said at least one power inputconnection interface extends away from the charger housing for use and aretracted position for storage of said at least one power inputconnection interface within the charger housing, said at least one powerinput connection interface being operatively connected to the internalbattery for providing an electrical charge from an external power sourceto the charger unit when said at least one power input connectioninterface is operatively engaged with said power source and forrecharging the internal battery when the charger unit is connected tosaid power source in said manner; and a plurality of power connectionoutput connector cables operatively connected to the internal batteryfor providing an electrical charge from the internal battery torespective electronic devices when said devices are connected to thecharger unit via the power connection output connector cables, eachconnector cable comprising: a proximal end attached to the chargerhousing, a distal end having an output connection interface adapted forengagement with an electronic device; and an intermediate portionextending between said proximal and distal ends of said connector cable,wherein at least the output connection interface of each of saidplurality of power connection output connector cables is storable withina storage cavity formed in the charger housing so that said outputconnection interfaces are contained within the general footprint of thecharger housing when not in use and are removable from said cavities toan extended position for use to connect with an electronic device, andwherein the output connection interfaces of at least two of the powerconnection output connector cables are stored within a common cavityformed within the charger housing and are disposed in respective storagepositions within said cavity without interfering with movement of theother output connection interface from the cavity to its extendedposition for use.
 21. The portable charger unit according to claim 20,wherein said at least one power input interface comprises: a wall pluginterface operatively connected to the charger housing and configuredfor engagement with a wall socket; and a car charger interfaceoperatively connected to the charger housing and configured forengagement with a car charger socket.
 22. The portable charger unitaccording to claim 21, wherein both the wall plug interface and the carcharger interface are pivotable to respective retracted positions anddisposed within the general footprint of the charger housing when insaid retracted positions.
 23. The portable charger unit according toclaim 21, wherein the car charger interface comprises: a proximal endattached to the charger housing; a distal end having a head portionincluding the interface adaptable for engagement with the car chargersocket; and an intermediate cord portion extending between said proximaland distal ends, wherein the charger housing includes a cavity forstorage of the head portion when the car charger interface is in itsretracted position.
 24. The portable charger unit according to claim 20further comprising at least one power connection output port operativelyconnected to the internal battery.